lap joint flang stub end Size: from 1/2 to 200 inch (DN15-DN6000) Standard: ... , JIS, EN, JB, GB, UNI,API lap joint flang stub end Technics: Forged Size: from 1/2 to 48(DN15-DN6000 ... Method: rust preventing oil, spray paint (black, yellow), hot galvanization, cold galvanization or colored electroplate, powder coating and so on. Types ... (Rst37.2, S235jrg2, A105 ) flange and lap joint flang stub end